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    <title>Document</title>
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    <script>
        function test(person) {
            person.age = 26
            person = {
                name: 'hzj',
                age: 18
            }
            return person
        }
        const p1 = {
            name: 'fyq',
            age: 19
        }
        const p2 = test(p1);
        console.log(p1);
        console.log(p2);
    </script>
</body>

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